Stud setter



F. R. LAMB STUD SETTER July 6, 7.

Filed June 28, 1934 wwf mu.

fard/ZEER MMM Patented July 6, 1937 12 Claims.

This invention relates to` stud setters and has as its objects to simplify, render more efficient and improve generally devices of this character. One of the other important objects of this invention is to provide a stud setter having means insuring an accurate and complete engagement of the socket with the stud prior to the engagement of the clutch parts carried by the driving and driven members of the device, and further insuring a complete disengagement of the driven member from the driving member prior to the release of the stud by the socket member.

Another object of the invention is to provide means for positively resisting separation of the jaw members or socket sections due to torsional strains to thus insure an accurate engagement of the socket member with the work.

Another object of the invention is to provide for multiple accurate adjustment of the device permitting facile regulation of the distance the studs or other work is driven.

Numerous other objects and advantages, as well as the novel details of construction of this invention, will be made more apparent as this description proceeds, especially when considered in connection with the accompanying drawing,

wherein Figure 1 is a sectional elevational view of a stud setter constructed in accordance with my invention;

Figure 2 is a similar sectional view showing the relation of the device to the work when in stud driving position;

Figure 3 is a similar view showing the device at the moment of release of the drive connection,

and

Figure 4 is a transverse sectional view taken substantially on the plane indicated by line 4 4 in Figure 2.

40 Referring now particularly to the drawing wherein like reference characters indicate like parts, the reference character l indicates rag mentarily a tapered shank for engagement with the rotating holder or chuck of a drill press or other driving means. Secured to oriormed integrally with the shank l!) is a head Il provided on its lower face with clutch teeth l2.

Preferably adjustably secured to the head ll, as by means for instance ci screw threads i3,

is a substantially cylindrical or sleeve-like member. I4. Telescoping the lower end o the sleeve lli and adjustably secured thereto by means of screw threads l5 is a collar i6. A lock nut l'l is provided for locking the collar i6 in place after the same has been adjusted. The sleeve M is locked in position, after being adjusted withV respect to` the head I l, by means of one or more set screws I8 which project through longitudinally extending slots IS formed in the sleeve M. By removing the set screws the head ll may be turned through one or more revolutions to axially adjust .the same and consequently the clutch face or element l2 thereof Awithin the sleeve.

. The parts lil, Il, l, and i6 may beyconsidered the driving member of the device. 10,

Mounted within the driving member is a clutch sleeve 26. This clutch sleeve Z is provided'with a clutch face or clutch teeth'Zl. complementary to the clutch element I2.V The clutch sleeve 2t is mounted for sliding movement longitudinally 1.5,

of the driving member along the axis of rotation thereof. Mounted within the clutch sleeve 2i) for movement longitudinally thereof along the axis of rotation is a socket member or nut 22. This socket or nut member is formed of two sections 22a and 22h, each section being shaped at its lower end so that these sections jointly form a tapped stud engaging socket 23. The upper end of one of the socket sections is bifurcated forming apair of spaced furcations 2li, the up- 25. per end of the other socket section being pro-V vided with a tongue 25 which fits between vthe furcations 24. The two socket sections are supported upon a pivot pin 26, the projecting ends of which engage respectively in apair of opf` posed longitudinally extending slots 2l formedy p' in the clutch sleeve 20. This mode of intercon-f ne-cting the pivotal ends of the socket sections prevents any relative shifting of these socketY sections during their relative angular movement. 3 In order to effectively resistktorsional strains to which the same is subjected, the socket or nut member '22 is rectangular in cross section, as seen in Figure 4l, and fits within the rectangular bore o r opening 28 ofthe clutch sleeve Z. 4This 40 bore or opening 28 tapers or flares outwardly towards its lower end vto provide a clearance between the face of the opening and the socket member. The lower end of the socket member is provided with flangesv or enlargements 29 which, 45

0 v the socket sections into abuttingrelation, as this. 1

socket member is forced into the opening in the clutch sleeve, a pair of the opposed faces of the socket member lare provided withbeveled surfaces 3! lwhich engage a pair of cooperating bevillustrated in Figure 1, is adapted to engage an annular beveled surface 3ft formed on the inner face of the driving sleeve member I4. Thus the engagement of thesurfaoes 33 and 34 limits the movement of the clutch sleeve in one direction and the engagement of the complementary clutch elements I2 and 2| limits the movement of the clutch sleeve in the other direction. The rela- -tive sliding movement between the Vclutch sleeve 23 and the socket or nut'member 22`is limited by the length of the slots 2l in which the pivot pin 26 works. Y

Y As heretofore mentioned, it is particularly advantageous to provide positive means for preventing an engagement of the clutch elements,'

and as a consequence an establishment of the drive to the socket member prior toa complete accurate and positive'engagement of the socket' member with the studor other work. To accomplish this object, I provide locking or latching means which,rprior tothe engagement of the socket with the'work, prevents movement of the clutch sleeve intoclutch engaging position, this locking or latching means being subsequently released by the movement of the socket member instant to its engagement with the stud or work.

The particular form of means for accomplishing this, which is herein illustrated, consists Vof` a pair of opposed latching elements or members 35 movable radially of the clutch sleeve 20 through Va pair of radially disposed openings 3B. The inner face of the driving sleeve member I4 is pro-vided withan annular groove 3l and the'faces of the socket member adjacent to :the latch ele- Y ments 35 are provided with `a pair of recesses 33. With the socket member 22 in its lowermost Y position, as illustratedrin Figure 1, the latchingV members 35 are held into engagement with the annular groove 3l bythe adjacent-faces of the socket member. Y"Ihis therefore interlocks the clutch sleeve 2,with thegdriving sleeve member Y I4 and prevents any relative axial sliding movement ofthe clutch sleeve into clutching position. l/Vhen, however,v the socket Y member is movedY axially of the clutch sleeve instant to the engagement thereof with the work, the recesses 38 formed therein arebrought opposite'the latching elements 35 thus permitting radial inward movementof these latching elements to free them from theannular groove 31. yThe'clutch sleeve is thereuponfreed from the driving sleeve member I4 and permitted to move` axially of the device together withV the socket member into clutching position.Y However, as will be evident from an 'examination of the drawing, theseveral parts are sojdesigned and dimensioned that the socketV member will not freeltheflatching elements to permit ra movementof the clutch sleeve until after the flanges or enlargements 22E-thereof are en- Y gaged within the portion 30 of Vthe clutch sleeve thus insuring a tight'lgripping engagement be-A tween the socket and stu-d before the'driving `connection is established.

While the clutch elements are engaged, the e latching elements 35 are held in engagement with Vthe recesses 38 by the inner face of the driving sleeve I4, and this interlocking relation between the socket member and the clutch sleeve is maintained until after the disengagement of the clutch elements. The further downward movement of the Yclutch* sleeve and socket member, after the release of the drive connection, brings the latching elements opposite the groove 3l to release them from engagement with the recesses 38, and

Apermit the further relative downward movement' Vof the socket member, due toits weight, to the release position illustrated in Figure 1 wherein the socket sections are relatively angularly displaced to free the stud.

A wear Vresisting and thrust element 39 -is preferably associated with the socket recessat the f upper end thereof.V This element may be conveniently held in po-sition by providing the same witha neck portion 40 terminating in a head, the latter being arranged in a recess 4I formed in the socket member. A spring l2 may be provided for normally urging, the element 39v downwardly to assist Vin fr'eeingthe work from the socket member.

The distance between the clutch elements, and i consequently the period during which these clutch elements will remain in driving engagement, may be regulated by adjusting the driving sleeve I 4 with respect to the head I I.

The collar .I5 maybe adjusted to also regulate the time the clutch elements are in driving relation, it being understood that when the lower edge of the collar I5 has engaged the face of the work, the driving connection between the clutch parts will continue, due to the engagement of the stud with the work,'only until the relative movementV between the clutch sleeve and the driven member has caused a release of the clutch elements andas a consequence a cessation of the drive to the socket member. By reason of the adjustable sleeve I6, the necessity for using the ordinary gauge block is practically eliminated. s i

From the foregoing description it is believed that the operation of the device will be readily -V apparent to those skilled in this Vart. It will probably be suicient tostate Ythatwith the parts in the position shown in Figure 1 the socket member is engaged with the stud, which has previously been manuallyturned into a slight initial engagement with its bore suiiicientto hold the stud upright, The resulting upward movement of the socket member causes thesocket sections to be brought intoabutting Yrelation and into gripping relation with the stud by reason of their engagement within the Vportion 33 of the clutch sleeve. Subsequentto the engagement of the socketr 20. with the stud, the recesses`33 are brought opposite the latching elements 35, thus permitting radial inward movement of ithese latching elements and sleeve lll. At this moment, thepivet pin 25 has engagedthe upper end of the slots 2 and thus thefY socket member and clutch sleeve move together until the-clutch face 2l `of the clutch sleeve-20 engages `theclutch face I2 ofthe head II. TheY drive connection between the driving and driven Y parts ofV the device is `thus established and thestud is rotated, the whole device traveling downwardlytherewithfuntil vthe lowerv edge of the collar 1i 5 engages the face of the work. Then downwardmovement of the driven member stops and-the clutch sleeve 'and socket member partake` of a further downward movement relative tothe Y the release of the clutch sleeve from the driving' driving member until the clutch elements are separated to disconnect the drive. Thereupon, the device is pulled upwardly away from the stud and the parts again assume the position illustrated in Figure 1 wherein the socket sections are separated to fully release the stud.

Owing to the fact that the driving connection is not established until after the socket has gripped the stud and is disconnected prior to the time the socket releases the stud, all liability of stripping or mutilating the threads on the stud is eliminated.

With the herein described construction, the drive from the clutch -sleeve 2Q to the socket member is not only through the pivot pin 2S, but also through the rectangular engaging surfaces of the sleeve and socket at the zone 2&'1-3@ which, as will be noted, is immediately adjacent the engagement of the socket member with the stud` Various modifications may suggest themselves to those skilled in this art, and to this end reservation is made to make such changes as may come within the purview or" the accompanying claims.

What I claim as my invention is:

1. In a device of the class described, a driving member having a fixed clutch part, a shiitable clutch part mounted for movement into and out of engagement with said iixed clutch part, a sectional socket member mounted on said shiftable clutch part for relative movement with respect thereto, and latch means for holding said shiftable clutch part in non-clutching position operable upon a predetermined movement of said socket member to release said shiftable clutch part for engagement with said fixed clutch part.

2. In a device of the class described, a driving member having a iixed clutch part, a shiftable clutch part mounted for sliding movement along the axis of rotation of said driving member into and out of engagement with said fixed clutch part, a sectional socket member mounted on said shiftable clutch part for relative movement with respect thereto along the said axis of rotation, and latch means for holding said shiftable clutch part in non-clutching position operable upon a movement of said socket member in one direction to release said shiftable clutch part for engagement With said iixed clutch part.

3. In a device of the class described, a drivlng member having a xed clutch part, a shiftable clutch part mounted for movement into and out of engagement With said xed clutch part, a sectional socket member mounted on said shiftable clutch part for relative movement with respect thereto, and latch means for holding said shiftable clutch part in non-clutching position and for coupling together said shiftable clutch part and socket member, said latch means being operable to couple the shiftable clutch part and socket member upon a relative movement between said shiftable clutch part and socket member. f

4. In a device of the class described, a rotatable driving member having a fixed clutch part, a shiftable clutch part mounted for sliding movement along the axis of rotation of said driving member into and out of engagement with said fixed clutch part, a sectional socket member, means for mountingv said socket sections upon said shiftable clutch part for movement toward and from one another and for relative axial sliding movement with respect thereto, and means controlled by the relative axial movement of said shiftable clutch part and socket member for controlling the movement of said shiftvzith said iixed clutch Dart.

5. In a device of the class described, a driving member having a xed clutch part, a shiftable clutch part mounted for movement into and out of engagement with said fixed clutch part, a sectional socket member mounted on said shiftable clutch part, and means for preventing driving engagement of said clutch parts prior to the engagement of said socket member with the work.

6. In a device of the class described, a rotatable driving member having a fixed clutch part,

a shiftab-le clutch part mounted for movementinto and outv of engagement with said iixed clutch part, a socket member mounted on said shiftable clutch part, and latching means for preventing movement of said shiftableiclutch part into clutching position reieased byl socket member after engagement of said socket member with the Work.

7. In a device ofthe class described, a rot-'atable driving member having a fixed clutchpart, a driven member including a shiftable clutch part and a` sectional socket member carried thereby, and latching means for selectively coupling said shiftableclutch part to said driving member or to said socket member.

8. In a device o1" the class described, a rotatable driving member having a xed clutch part, a shiftableclutch part mounted for axial movement into andout of engagement with said fixed clutch part, a sectional socket member mounted on said shiftableclutch part forrelative axial movement with respect thereto, and latch means for holding said shiitable clutch part in nonclutching position operable upon a predetermined movement of said socket member to release said shiftable clutch part for engagement with said iixed clutch part and to couple said socket member with said shiftable clutch part against relative axial movement therebetween.

9. In a device of the class described, a rotating driving member, a clutch part carried thereby, acomplementary clutch part slidably mounted on said driving member for sliding movement along the axis of rotation thereof into and out of engagement with said iirst mentioned clutch part, a sectional socket member, means for mounting said socket Asections upon said complementary clutch part for movement toward and from one another and for relative axial sliding movement With respect thereto', and latching means carried by said complementary clutch part engageable with said driving member for holding said complementary clutch part in non-clutching position and operable after a predetermined movement of said socket member to release said complementary clutch part for engagement with said iirst mentioned clutch part.

10. In a device of the class described, a rotating driving member, a clutch part carried thereby, a complementary clutch part slidably mounted on said driving member for sliding movement along the axis of rotation thereof into andl'out of engagement with said rst mentioned clutch part, a sectional socket member, means for mounting said socket sections upon said complementary clutchl part for movement toward and from one4 another and for relative axial sliding movement with respect thereto, latchfmeans carried by said ableclutch part' into and out'of engagement n Y complementary clutch part engaging said driving Y memberr for holding said complementary clutch ber moving axially of said complementary clutchY member upon engagement with the Work, and means operable upon such movement and after engagement of the socket member with the work for releasing said latcl'iing means.

l1. In a device of the class described, a rotating driving member, a clutch lpart carried thereby, a complementary clutch part slidably mounted on said driving member for sliding movement along the axis of rotation thereof into and out of engagement with said first mentioned clutch part, a sectional socket member, means for mounting said socket sections upon said complementary clutch part for movement toward and from one another and for relative axial movement with respect thereto, said socket member being substantially rectangular in crossrsection', said complementary p clutch part having a rectangular recess toreceive said socket member, and snugly engaging said socket sections upon relative movement of said socket member in one direction to force said socket sections into abutting relation.

12. In a device of the class described, a rotating drvingmember, 'a clutch part'carried thereby,`a

complementary clutch part slidably mounted onV said driving'member for sliding movement along theY axis of rotation thereof into and out of engagement with saidrst mentioned clutch part,

a sectional socket member; means for mounting*- mentary clutch part having a rectangularV recess to receive said socket member and snugly engaging said socket sections upon relative movementv of said socket member in one direction to force said socket sections into abutting relation, and latch means for Yholding said complementary clutch part in non-clutching position operable upon a predetermined movement of said socketj member to release said complementary clutch part for engagement with Vsaid fixed clutch part.

' FORD R. LAMB. 

